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VBAC Risk Score for Successful Vaginal Delivery (Flamm Model)
Predicts likelihood of successful vaginal birth after previous caesarean section (VBAC).
When to Use
Women in labor with history of caesarean section delivery.
The VBAC Risk Score for Successful Vaginal Delivery (Flamm Model) is a simple scoring system for use at labor admission to predict which patients will have a successful vaginal birth after prior caesarean section (VBAC).
It includes cervical assessment which can only be used after admission for labor.
A high VBAC Risk Score predicts success, but a low score does not necessarily predict failure; clinical judgment should be always considered.
Determining which laboring patients are likely to have successful or unsuccessful vaginal delivery would be helpful for labor planning and shared decision making.
Bruce Flamm, MD, is a clinical professor of obstetrics and gynecology at the University of California, Irvine, and has practiced obstetrics and gynecology at multiple Kaiser Permanente Medical Centers. He has published dozens of papers in peer-reviewed journals and four books, including Birth After Cesarean: The Medical Facts. Dr. Flamm also serves on the editorial board of several medical journals.
To view Dr. Bruce Flamm's publications, visit PubMed